* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html,
body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: #1c1c1f;
}

#webgl,
#grid-overlay,
#grid-blink,
#signature {
    position: fixed;
    inset: 0;
}

#webgl,
#grid-overlay,
#grid-blink {
    width: 100%;
    height: 100%;
}

#webgl {
    display: block;
}

#grid-overlay,
#grid-blink,
#signature {
    pointer-events: none;
}

#grid-overlay {
    z-index: 10;
}

#grid-blink {
    z-index: 11;
    mix-blend-mode: difference;
}

#signature {
    z-index: 12;
    font-family: "Share Tech Mono", "Courier New", monospace;
    font-size: 11px;
    letter-spacing: 0.18em;
    text-transform: lowercase;
    color: rgba(228, 232, 242, 0.58);
    text-shadow: 0 0 24px rgba(160, 170, 200, 0.2);
}

.sig {
    position: absolute;
    white-space: nowrap;
    user-select: none;
}

.sig-marked::before {
    content: "_";
    margin-right: 0.35em;
    opacity: 0.55;
}

.sig-tl {
    top: 1.2rem;
    left: 1.35rem;
}

.sig-tr {
    top: 1.5rem;
    right: 2.35rem;
    font-size: 11px;
    letter-spacing: 0;
    transform: rotate(-90deg);
    transform-origin: right top;
}

.sig-bl {
    bottom: 1.5rem;
    left: 2.1rem;
    letter-spacing: 0.22em;
    transform: rotate(-90deg);
    transform-origin: left bottom;
}

.sig-br {
    right: 1.35rem;
    bottom: 1.2rem;
    letter-spacing: 0.14em;
}